{"id":"CVE-2021-39800","aliases":["A-208277166","ASB-A-208277166","EUVD-2021-26157","GHSA-w3v8-rrpc-q26v","UBUNTU-CVE-2021-39800"],"status":"published","title":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after...","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208277166References: Upstream kernel","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00149,"percentile":0.04118,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-416"],"published":"2022-04-01T00:00:00Z","modified":"2026-11-10T02:48:59Z","fixes":[{"ecosystem":"Android","package":":linux_kernel:","fixed_in":[":2022-04-05"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Android","package":":linux_kernel:","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":":0"},{"fixed":":2022-04-05"}]}],"versions":["Kernel"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"linux-nvidia-tegra-5.15","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1009.9~20.04.1","5.15.0-1010.10~20.04.1","5.15.0-1012.12~20.04.1","5.15.0-1014.14~20.04.1","5.15.0-1015.15~20.04.1","5.15.0-1016.16~20.04.1","5.15.0-1017.17~20.04.1","5.15.0-1018.18~20.04.1","5.15.0-1019.19~20.04.1","5.15.0-1020.20~20.04.1","5.15.0-1022.22~20.04.1","5.15.0-1025.25~20.04.1","5.15.0-1027.27~20.04.1","5.15.0-1030.30~20.04.1","5.15.0-1032.32~20.04.1","5.15.0-1039.39~20.04.1","5.15.0-1040.40~20.04.1","5.15.0-1041.41~20.04.1","5.15.0-1042.42~20.04.1","5.15.0-1043.43~20.04.1","5.15.0-1044.44~20.04.1","5.15.0-1045.45~20.04.1","5.15.0-1046.46~20.04.1","5.15.0-1047.47~20.04.1","5.15.0-1048.48~20.04.1","5.15.0-1049.49~20.04.1","5.15.0-1050.50~20.04.1","5.15.0-1051.51~20.04.1","5.15.0-1052.52~20.04.2","5.15.0-1053.53~20.04.1","5.15.0-1055.55~20.04.1","5.15.0-1057.57~20.04.1","5.15.0-1058.58~20.04.1","5.15.0-1060.60~20.04.1","5.15.0-1061.61~20.04.1","5.15.0-1063.63~20.04.1","5.15.0-1064.66~20.04.1","5.15.0-1065.67~20.04.1","5.15.0-1066.68~20.04.1","5.15.0-1067.69~20.04.1","5.15.0-1068.70~20.04.1","5.15.0-1070.72~20.04.1","5.15.0-1071.73~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-oem-5.13","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.13.0-1009.10","5.13.0-1010.11","5.13.0-1012.16","5.13.0-1014.18","5.13.0-1017.21","5.13.0-1019.23","5.13.0-1020.24","5.13.0-1021.25","5.13.0-1022.26","5.13.0-1026.32","5.13.0-1028.35","5.13.0-1029.36"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-riscv-5.11","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.11.0-1015.16~20.04.1","5.11.0-1017.18~20.04.1","5.11.0-1018.19~20.04.2","5.11.0-1020.21~20.04.1","5.11.0-1021.22~20.04.1","5.11.0-1022.23~20.04.1","5.11.0-1023.24~20.04.1","5.11.0-1024.25~20.04.1","5.11.0-1026.28~20.04.1","5.11.0-1028.31~20.04.1","5.11.0-1029.32~20.04.1","5.11.0-1030.34","5.11.0-1031.35"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"linux-riscv-5.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.8.0-14.16~20.04.1","5.8.0-14.16~20.04.3","5.8.0-16.18~20.04.1","5.8.0-17.19~20.04.1","5.8.0-18.20~20.04.1","5.8.0-20.22~20.04.1","5.8.0-22.24~20.04.1","5.8.0-25.27~20.04.1","5.8.0-26.28~20.04.1","5.8.0-29.31~20.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-aws-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1009.9~22.04.2","6.8.0-1010.10~22.04.2","6.8.0-1011.12~22.04.1","6.8.0-1013.14~22.04.1","6.8.0-1014.15~22.04.1","6.8.0-1015.16~22.04.1","6.8.0-1016.17~22.04.2","6.8.0-1017.18~22.04.1","6.8.0-1018.19~22.04.1","6.8.0-1019.21~22.04.1","6.8.0-1020.22~22.04.1","6.8.0-1021.23~22.04.1","6.8.0-1023.25~22.04.1","6.8.0-1024.26~22.04.1","6.8.0-1027.29~22.04.1","6.8.0-1028.30~22.04.1","6.8.0-1029.31~22.04.1","6.8.0-1030.32~22.04.1","6.8.0-1031.33~22.04.1","6.8.0-1032.34~22.04.1","6.8.0-1033.35~22.04.1","6.8.0-1035.37~22.04.1","6.8.0-1036.38~22.04.1","6.8.0-1039.41~22.04.1","6.8.0-1040.42~22.04.1","6.8.0-1041.43~22.04.1","6.8.0-1042.44~22.04.1","6.8.0-1043.45~22.04.1","6.8.0-1044.46~22.04.1","6.8.0-1045.47~22.04.1","6.8.0-1046.49~22.04.1","6.8.0-1047.50~22.04.1","6.8.0-1050.53~22.04.1","6.8.0-1051.54~22.04.1","6.8.0-1052.55~22.04.1","6.8.0-1053.56~22.04.1","6.8.0-1055.58~22.04.1","6.8.0-1057.60~22.04.1","6.8.0-1060.63~22.04.1","6.8.0-1061.64~22.04.1","6.8.0-1062.65~22.04.2","6.8.0-1063.66~22.04.1","6.8.0-1064.67~22.04.1","6.8.0-1065.68~22.04.1","6.8.0-1066.69~22.04.1","6.8.0-1069.74~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-azure-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1008.8~22.04.1","6.8.0-1009.9~22.04.1","6.8.0-1010.10~22.04.1","6.8.0-1012.14~22.04.1","6.8.0-1013.15~22.04.1","6.8.0-1014.16~22.04.1","6.8.0-1015.17~22.04.2","6.8.0-1017.20~22.04.1","6.8.0-1018.21~22.04.1","6.8.0-1020.23~22.04.1","6.8.0-1021.25~22.04.1","6.8.0-1025.30~22.04.1","6.8.0-1026.31~22.04.1","6.8.0-1027.32~22.04.1","6.8.0-1028.33~22.04.1","6.8.0-1029.34~22.04.1","6.8.0-1030.35~22.04.1","6.8.0-1031.36~22.04.1","6.8.0-1034.39~22.04.1","6.8.0-1036.42~22.04.1","6.8.0-1040.46~22.04.1","6.8.0-1041.47~22.04.1","6.8.0-1044.50~22.04.1","6.8.0-1051.57~22.04.1","6.8.0-1052.58~22.04.1","6.8.0-1059.65~22.04.1","6.8.0-1062.69~22.04.1","6.8.0-1063.71~22.04.1","6.8.0-1064.72~22.04.1","6.8.0-1065.73~22.04.1","6.8.0-1067.75~22.04.1","6.8.0-1068.76~22.04.1","6.8.0-1070.78~22.04.1","6.8.0-1073.82~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-gcp-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1010.11~22.04.1","6.8.0-1011.12~22.04.1","6.8.0-1012.13~22.04.1","6.8.0-1013.14~22.04.1","6.8.0-1014.16~22.04.1","6.8.0-1015.17~22.04.1","6.8.0-1016.18~22.04.1","6.8.0-1017.19~22.04.1","6.8.0-1018.20~22.04.1","6.8.0-1019.21~22.04.1","6.8.0-1020.22~22.04.1","6.8.0-1021.23~22.04.1","6.8.0-1024.26~22.04.1","6.8.0-1025.27~22.04.1","6.8.0-1026.28~22.04.1","6.8.0-1027.29~22.04.1","6.8.0-1028.30~22.04.1","6.8.0-1029.31~22.04.1","6.8.0-1030.32~22.04.1","6.8.0-1031.33~22.04.1","6.8.0-1032.34~22.04.1","6.8.0-1033.35~22.04.1","6.8.0-1034.36~22.04.2","6.8.0-1036.38~22.04.1","6.8.0-1037.39~22.04.1","6.8.0-1040.42~22.04.1","6.8.0-1041.43~22.04.1","6.8.0-1042.45~22.04.1","6.8.0-1043.46~22.04.1","6.8.0-1044.47~22.04.1","6.8.0-1045.48~22.04.1","6.8.0-1046.49~22.04.1","6.8.0-1047.50~22.04.2","6.8.0-1048.51~22.04.1","6.8.0-1052.55~22.04.1","6.8.0-1053.56~22.04.1","6.8.0-1054.57~22.04.1","6.8.0-1058.61~22.04.1","6.8.0-1060.63~22.04.1","6.8.0-1063.69~22.04.1","6.8.0-1064.72~22.04.1","6.8.0-1065.73~22.04.1","6.8.0-1066.74~22.04.1","6.8.0-1067.75~22.04.1","6.8.0-1069.77~22.04.1","6.8.0-1070.78~22.04.1","6.8.0-1073.81~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-ibm-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1008.8~22.04.1","6.8.0-1010.10~22.04.1","6.8.0-1011.11~22.04.1","6.8.0-1012.12~22.04.1","6.8.0-1013.13~22.04.1","6.8.0-1014.14~22.04.1","6.8.0-1015.15~22.04.1","6.8.0-1016.16~22.04.1","6.8.0-1017.17~22.04.1","6.8.0-1018.18~22.04.1","6.8.0-1019.19~22.04.1","6.8.0-1023.23~22.04.1","6.8.0-1024.24~22.04.1","6.8.0-1025.25~22.04.1","6.8.0-1026.26~22.04.1","6.8.0-1027.27~22.04.1","6.8.0-1028.28~22.04.1","6.8.0-1029.29~22.04.1","6.8.0-1030.30~22.04.1","6.8.0-1033.33~22.04.1","6.8.0-1036.36~22.04.1","6.8.0-1037.37~22.04.1","6.8.0-1038.38~22.04.1","6.8.0-1039.39~22.04.1","6.8.0-1040.40~22.04.1","6.8.0-1041.41~22.04.1","6.8.0-1042.42~22.04.1","6.8.0-1043.43~22.04.1","6.8.0-1044.44~22.04.1","6.8.0-1045.45~22.04.1","6.8.0-1049.49~22.04.1","6.8.0-1050.50~22.04.1","6.8.0-1051.51~22.04.1","6.8.0-1052.52~22.04.1","6.8.0-1055.56~22.04.1","6.8.0-1057.58~22.04.1","6.8.0-1060.61~22.04.1","6.8.0-1061.62~22.04.1","6.8.0-1062.63~22.04.1","6.8.0-1063.64~22.04.1","6.8.0-1066.67~22.04.1","6.8.0-1069.70~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-intel-iot-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1073.75"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-nvidia-tegra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1009.9","5.15.0-1010.10","5.15.0-1012.12","5.15.0-1013.13","5.15.0-1014.14","5.15.0-1015.15","5.15.0-1016.16","5.15.0-1017.17","5.15.0-1018.18","5.15.0-1019.19","5.15.0-1020.20","5.15.0-1021.21","5.15.0-1022.22","5.15.0-1025.25","5.15.0-1026.26","5.15.0-1027.27","5.15.0-1028.28","5.15.0-1030.30","5.15.0-1032.32","5.15.0-1033.33","5.15.0-1034.34","5.15.0-1035.35","5.15.0-1036.36","5.15.0-1037.37","5.15.0-1038.38","5.15.0-1039.39","5.15.0-1040.40","5.15.0-1041.41","5.15.0-1042.42","5.15.0-1043.43","5.15.0-1044.44","5.15.0-1045.45","5.15.0-1046.46","5.15.0-1047.47","5.15.0-1048.48","5.15.0-1049.49","5.15.0-1050.50","5.15.0-1051.51","5.15.0-1052.52","5.15.0-1053.53","5.15.0-1055.55","5.15.0-1056.56","5.15.0-1057.57","5.15.0-1058.58","5.15.0-1060.60","5.15.0-1061.61","5.15.0-1063.63","5.15.0-1064.66","5.15.0-1065.67","5.15.0-1066.68","5.15.0-1067.69","5.15.0-1068.70","5.15.0-1070.72","5.15.0-1071.73"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-nvidia-tegra-igx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1001.1","5.15.0-1002.2","5.15.0-1004.4","5.15.0-1005.5","5.15.0-1006.6","5.15.0-1007.7","5.15.0-1008.8","5.15.0-1009.9","5.15.0-1012.12","5.15.0-1013.13","5.15.0-1015.15","5.15.0-1016.16","5.15.0-1018.18","5.15.0-1019.19","5.15.0-1020.20","5.15.0-1021.21","5.15.0-1022.22","5.15.0-1023.23","5.15.0-1024.24","5.15.0-1026.26","5.15.0-1027.27","5.15.0-1028.28","5.15.0-1029.29","5.15.0-1030.30","5.15.0-1031.31","5.15.0-1032.32","5.15.0-1033.33","5.15.0-1034.34","5.15.0-1035.35","5.15.0-1036.36","5.15.0-1037.37","5.15.0-1038.38","5.15.0-1039.39","5.15.0-1040.40","5.15.0-1041.41","5.15.0-1042.42","5.15.0-1044.44","5.15.0-1045.45","5.15.0-1046.46","5.15.0-1047.47","5.15.0-1049.49","5.15.0-1050.50","5.15.0-1052.52","5.15.0-1053.53","5.15.0-1054.54","5.15.0-1055.55","5.15.0-1056.56","5.15.0-1057.57","5.15.0-1059.59"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-oracle-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1006.6~22.04.3","6.8.0-1008.8~22.04.1","6.8.0-1010.10~22.04.1","6.8.0-1011.11~22.04.1","6.8.0-1012.12~22.04.1","6.8.0-1013.13~22.04.1","6.8.0-1014.14~22.04.1","6.8.0-1015.15~22.04.1","6.8.0-1016.17~22.04.1","6.8.0-1017.18~22.04.1","6.8.0-1018.19~22.04.1","6.8.0-1019.20~22.04.1","6.8.0-1020.21~22.04.1","6.8.0-1021.22~22.04.1","6.8.0-1022.23~22.04.1","6.8.0-1023.24~22.04.1","6.8.0-1024.25~22.04.1","6.8.0-1025.26~22.04.1","6.8.0-1026.27~22.04.1","6.8.0-1027.28~22.04.1","6.8.0-1028.29~22.04.1","6.8.0-1029.30~22.04.1","6.8.0-1030.31~22.04.1","6.8.0-1032.33~22.04.1","6.8.0-1033.34~22.04.1","6.8.0-1035.36~22.04.1","6.8.0-1037.38~22.04.1","6.8.0-1038.39~22.04.1","6.8.0-1039.40~22.04.1","6.8.0-1040.41~22.04.1","6.8.0-1041.42~22.04.1","6.8.0-1042.43~22.04.1","6.8.0-1043.44~22.04.1","6.8.0-1044.45~22.04.1","6.8.0-1047.48~22.04.1","6.8.0-1049.50~22.04.1","6.8.0-1050.51~22.04.1","6.8.0-1052.53~22.04.1","6.8.0-1054.55~22.04.1","6.8.0-1057.58~22.04.1","6.8.0-1058.61~22.04.1","6.8.0-1059.62~22.04.1","6.8.0-1060.63~22.04.1","6.8.0-1061.64~22.04.1","6.8.0-1062.65~22.04.1","6.8.0-1067.71~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"linux-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.15.0-1032.35"]},{"source":"osv","ecosystem":"Ubuntu:Pro:Realtime:22.04:LTS","package":"linux-realtime-6.8","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.1-1004.4~22.04.1","6.8.1-1005.5~22.04.2","6.8.1-1006.6~22.04.1","6.8.1-1007.7~22.04.1","6.8.1-1008.8~22.04.1","6.8.1-1009.9~22.04.1","6.8.1-1010.10~22.04.1","6.8.1-1011.11~22.04.1","6.8.1-1012.12~22.04.1","6.8.1-1013.14~22.04.1","6.8.1-1014.15~22.04.1","6.8.1-1015.16~22.04.1","6.8.1-1016.17~22.04.1","6.8.1-1017.18~22.04.1","6.8.1-1018.19~22.04.1","6.8.1-1019.20~22.04.1","6.8.1-1020.21~22.04.1","6.8.1-1021.22~22.04.1","6.8.1-1022.23~22.04.1","6.8.1-1023.24~22.04.1","6.8.1-1024.25~22.04.1","6.8.1-1025.26~22.04.1","6.8.1-1026.27~22.04.1","6.8.1-1030.31~22.04.1","6.8.1-1031.32~22.04.1","6.8.1-1034.35~22.04.1","6.8.1-1035.36~22.04.1","6.8.1-1036.37~22.04.1","6.8.1-1037.38~22.04.1","6.8.1-1038.39~22.04.1","6.8.1-1039.40~22.04.1","6.8.1-1040.41~22.04.1","6.8.1-1041.42~22.04.1","6.8.1-1042.43~22.04.1","6.8.1-1045.46~22.04.1","6.8.1-1046.47~22.04.2","6.8.1-1047.48~22.04.1","6.8.1-1048.49~22.04.1","6.8.1-1051.52~22.04.1","6.8.1-1052.53~22.04.1","6.8.1-1055.56~22.04.1","6.8.1-1056.57~22.04.2","6.8.1-1057.58~22.04.1","6.8.1-1058.59~22.04.1","6.8.1-1059.60~22.04.1","6.8.1-1060.61~22.04.1","6.8.1-1061.62~22.04.1","6.8.1-1064.65~22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-aws-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1007.7~24.04.2","7.0.0-1009.9~24.04.1","7.0.0-1010.10~24.04.1","7.0.0-1011.11~24.04.1","7.0.0-1012.12~24.04.1","7.0.0-1013.13~24.04.1","7.0.0-1014.14~24.04.1","7.0.0-1017.18~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-azure-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1008.8~24.04.2","7.0.0-1014.14~24.04.1","7.0.0-1017.17~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-azure-nvidia","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1013.14","6.8.0-1014.15","6.8.0-1016.17","6.8.0-1018.19","6.8.0-1019.20","6.8.0-1022.23","6.8.0-1025.27","6.8.0-1027.30","6.8.0-1029.32","6.8.0-1039.42"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-gcp-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1006.6~24.04.2","7.0.0-1011.11~24.04.1","7.0.0-1013.13~24.04.1","7.0.0-1014.14~24.04.1","7.0.0-1017.19~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-hwe-6.17","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.17.0-14.14~24.04.1","6.17.0-19.19~24.04.2","6.17.0-20.20~24.04.1","6.17.0-22.22~24.04.1","6.17.0-23.23~24.04.1","6.17.0-29.29~24.04.1","6.17.0-35.35~24.04.1","6.17.0-40.40~24.04.1","6.17.0-41.41~24.04.1","6.17.0-42.42"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-hwe-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-14.14~24.04.3","7.0.0-28.28~24.04.1","7.0.0-29.29~24.04.2","7.0.0-30.30~24.04.1","7.0.0-31.31~24.04.1","7.0.0-34.34~24.04.1","7.0.0-38.38~24.04.4","7.0.0-42.42~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-nvidia-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1013.13~24.04.1","7.0.0-1015.15~24.04.1","7.0.0-1016.16~24.04.1","7.0.0-1018.18~24.04.1","7.0.0-1019.19~24.04.2","7.0.0-1024.25~24.04.1","7.0.0-1025.26~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-nvidia-tegra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1003.3","6.8.0-1004.4","6.8.0-1008.8","6.8.0-1009.9","6.8.0-1010.10","6.8.0-1012.12","6.8.0-1013.13","6.8.0-1016.16","6.8.0-1019.19","6.8.0-1020.20","6.8.0-1021.21","6.8.0-1022.22","6.8.0-1023.23","6.8.0-1024.24","6.8.0-1025.25","6.8.0-1026.26","6.8.0-1029.30","6.8.0-1030.31","6.8.0-1031.32","6.8.0-1032.34","6.8.0-1035.38","6.8.0-1036.39","6.8.0-1038.42"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-oem-6.17","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.17.0-1005.5","6.17.0-1006.6","6.17.0-1007.7","6.17.0-1008.8","6.17.0-1009.9","6.17.0-1010.10","6.17.0-1011.11","6.17.0-1012.12","6.17.0-1017.17","6.17.0-1020.20","6.17.0-1023.23","6.17.0-1024.24","6.17.0-1025.25","6.17.0-1028.28","6.17.0-1030.30","6.17.0-1032.32","6.17.0-1033.33"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-oracle-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1006.6~24.04.3","7.0.0-1011.11~24.04.1","7.0.0-1012.12~24.04.1","7.0.0-1013.13~24.04.1","7.0.0-1016.18~24.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-raspi-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-2019.20"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-realtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.1-1015.16"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-riscv-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-27.27.1~24.04.2","7.0.0-28.28.1~24.04.3","7.0.0-30.30.1~24.04.1","7.0.0-31.31.1~24.04.1","7.0.0-34.34.1~24.04.1","7.0.0-38.38.1~24.04.1","7.0.0-42.42.1~24.04.1","7.0.0-43.43.1~24.04.2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"linux-xilinx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1008.9","6.8.0-1009.10","6.8.0-1011.12","6.8.0-1012.13","6.8.0-1013.14","6.8.0-1014.15","6.8.0-1015.16","6.8.0-1017.18","6.8.0-1018.19","6.8.0-1019.20","6.8.0-1020.21","6.8.0-1021.22","6.8.0-1022.23","6.8.0-1023.24","6.8.0-1024.25","6.8.0-1028.29","6.8.0-1029.30","6.8.0-1032.33","6.8.0-1033.34","6.8.0-1034.35","6.8.0-1035.36","6.8.0-1036.37"]},{"source":"osv","ecosystem":"Ubuntu:Nvidia-BlueField:24.04:LTS","package":"linux-bluefield","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1011.15","6.8.0-1012.16","6.8.0-1013.17","6.8.0-1014.18","6.8.0-1016.20","6.8.0-1017.21","6.8.0-1022.26","6.8.0-1023.27","6.8.0-1026.30","6.8.0-1028.33","6.8.0-1029.34","6.8.0-1030.35","6.8.0-1031.36","6.8.0-1032.37","6.8.0-1033.38","6.8.0-1036.41"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:24.04:LTS","package":"linux-aws-fips","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1035.37+fips1","6.8.0-1036.38+fips1","6.8.0-1038.40+fips1","6.8.0-1039.41+fips1","6.8.0-1040.42+fips1","6.8.0-1041.43+fips1","6.8.0-1042.44+fips1","6.8.0-1043.45+fips1","6.8.0-1044.46+fips1","6.8.0-1045.47+fips1","6.8.0-1046.49+fips1","6.8.0-1047.50+fips1","6.8.0-1050.53+fips1","6.8.0-1051.54+fips1","6.8.0-1052.55+fips1","6.8.0-1053.56+fips1","6.8.0-1055.58+fips1","6.8.0-1057.60+fips1","6.8.0-1060.63+fips1","6.8.0-1061.64+fips1","6.8.0-1062.65+fips1","6.8.0-1063.66+fips1","6.8.0-1064.67+fips1","6.8.0-1065.68+fips1","6.8.0-1066.69+fips1","6.8.0-1067.70+fips1","6.8.0-1069.74+fips1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:24.04:LTS","package":"linux-azure-fips","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1034.39+fips1","6.8.0-1040.46+fips1","6.8.0-1044.50+fips1","6.8.0-1046.52+fips1","6.8.0-1047.53+fips1","6.8.0-1052.58+fips1","6.8.0-1053.59+fips1","6.8.0-1054.60+fips1","6.8.0-1059.65+fips1","6.8.0-1062.69+fips1","6.8.0-1063.71+fips2","6.8.0-1064.72+fips1","6.8.0-1065.73+fips1","6.8.0-1067.75+fips1","6.8.0-1068.76+fips1","6.8.0-1069.77+fips1","6.8.0-1071.79+fips1","6.8.0-1073.82+fips1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:24.04:LTS","package":"linux-fips","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-38.38+fips4","6.8.0-78.78+fips1","6.8.0-79.79+fips1","6.8.0-83.83+fips1","6.8.0-84.84+fips1","6.8.0-85.85+fips1","6.8.0-86.87+fips1","6.8.0-87.88+fips1","6.8.0-88.89+fips1","6.8.0-90.91+fips1","6.8.0-94.96+fips1","6.8.0-100.100+fips1","6.8.0-101.101+fips1","6.8.0-106.106+fips1","6.8.0-107.107+fips1","6.8.0-110.110+fips2","6.8.0-111.111+fips1","6.8.0-116.116+fips1","6.8.0-124.124+fips1","6.8.0-134.134+fips1","6.8.0-136.136+fips2","6.8.0-137.137+fips1","6.8.0-138.138+fips1","6.8.0-139.139+fips1","6.8.0-142.142+fips1","6.8.0-146.146+fips1","6.8.0-147.147+fips1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:FIPS-updates:24.04:LTS","package":"linux-gcp-fips","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.0-1036.38+fips1","6.8.0-1037.39+fips1","6.8.0-1039.41+fips1","6.8.0-1040.42+fips1","6.8.0-1041.43+fips1","6.8.0-1042.45+fips1","6.8.0-1043.46+fips1","6.8.0-1044.47+fips1","6.8.0-1045.48+fips1","6.8.0-1046.49+fips1","6.8.0-1047.50+fips1","6.8.0-1048.51+fips1","6.8.0-1052.55+fips1","6.8.0-1053.56+fips1","6.8.0-1054.57+fips1","6.8.0-1055.58+fips1","6.8.0-1058.61+fips1","6.8.0-1060.63+fips1","6.8.0-1063.69+fips1","6.8.0-1064.72+fips1","6.8.0-1065.73+fips1","6.8.0-1066.74+fips1","6.8.0-1067.75+fips1","6.8.0-1068.76+fips1","6.8.0-1070.78+fips1","6.8.0-1071.79+fips1","6.8.0-1073.81+fips1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"linux-azure-fde","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1004.4","7.3.0-1002.3","7.3.0-1003.4","7.3.0-1004.5"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"linux-gke","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1002.3","7.0.0-1003.4","7.0.0-1005.6","7.0.0-1006.7","7.0.0-1007.8","7.0.0-1008.9","7.0.0-1010.11"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"linux-ibm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.19.0-1002.2","6.19.0-1003.3","7.0.0-1002.2","7.0.0-1004.4","7.0.0-1005.5","7.0.0-1007.7","7.0.0-1009.9","7.0.0-1010.10","7.0.0-1011.11","7.0.0-1012.12","7.0.0-1013.13","7.0.0-1014.14","7.0.0-1015.15","7.0.0-1017.17","7.0.0-1018.18"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"linux-nvidia","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1005.5","7.0.0-1006.6","7.0.0-1009.9","7.0.0-1013.13","7.0.0-1015.15","7.0.0-1016.16","7.0.0-1018.18","7.0.0-1025.26"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"linux-nvidia-bos","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-2012.12","7.0.0-2015.15","7.0.0-2016.16","7.0.0-2018.18","7.0.0-2022.23","7.0.0-2024.25"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"linux-oem-7.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-1005.5","7.0.0-1008.8","7.0.0-1009.9","7.0.0-1010.10","7.0.0-1011.11","7.0.0-1013.13","7.0.0-1014.14","7.0.0-1015.15","7.0.0-1017.17","7.0.0-1018.18"]}],"products":[{"vendor":"google","product":"android"}],"references":[{"url":"https://source.android.com/security/bulletin/2022-04-01","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-39800"},{"url":"https://github.com/advisories/GHSA-w3v8-rrpc-q26v"},{"url":"https://android.googlesource.com/kernel/common/+/504e1d6ee65d5","tags":["fix"]},{"url":"https://android.googlesource.com/kernel/common/+/a8200613c8c9f","tags":["fix"]},{"url":"https://android.googlesource.com/kernel/common/+/c47385c73fced","tags":["fix"]},{"url":"https://ubuntu.com/security/CVE-2021-39800","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-39800","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-39800","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208277166References: Upstream kernel","status":"published","published":"2022-04-12T16:11:44Z","modified":"2024-08-04T02:20:33.383Z","updated_at":"2026-11-02T14:33:09.175141Z"}],"euvd":[{"id":"EUVD-2021-26157","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208277166References: Upstream kernel","status":"published","published":"2022-04-12T16:11:44Z","modified":"2024-08-04T02:20:33Z","updated_at":"2026-11-03T03:24:22.263982Z"}],"ghsa":[{"id":"GHSA-w3v8-rrpc-q26v","title":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after...","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208277166References: Upstream kernel","status":"published","published":"2022-04-13T00:00:27Z","modified":"2023-01-27T05:01:34Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:41:55.318028Z"}],"nvd":[{"id":"CVE-2021-39800","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208277166References: Upstream kernel","status":"published","published":"2022-04-12T17:15:08.33Z","modified":"2026-06-17T04:04:10.757Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:07:06.029737Z"}],"osv":[{"id":"UBUNTU-CVE-2021-39800","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208277166References: Upstream kernel","status":"published","published":"2022-04-12T17:15:00Z","modified":"2026-11-10T02:48:59.294346823Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-10T03:16:57.350686Z"},{"id":"ASB-A-208277166","description":"In ion_ioctl of ion-ioctl.c, there is a possible way to leak kernel head data due to a use after free. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.","status":"published","published":"2022-04-01T00:00:00Z","modified":"2026-11-09T16:40:10.884737887Z","updated_at":"2026-11-10T17:35:05.376141Z"}]}}